I cannot do the twitch thing, I can do F6 but it just Saids Report to Mojang.
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Outdated versions are no longer supported.

Oh, but can't I migrate now longer? 😞

The only versions we support are 1.12.2 and the latest 1.13 snapshot. 1.8/1.8.9 are completely unsupported, and you should not be using them.
Twitch broadcasting is no longer supported on twitch's end. Use an external screen recorder such as OBS (free and open-source).